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Lighting suggestions

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I have a 125 6ft long tank, and I'd like to move from basic lighting to something that will really make the colors pop. I have mbuna, lots of blues. Do I go with LED? UIf so can you recommend something that will work but hopefully not break the bank? I tried ebay, but there were so many styles I was lost.

6 foot is very long, does it have a hood or a fixture with set bulb size right now?

I am a big fan of the 6700K T5 HO flourescent bulbs, but I am not sure what kind of fixture you are working with. If you could split and do two 30" fixtures both with dual T5 bulbs and do one 6700K and one color max in each fixture, I think its a pretty good setup.

I am not familiar with 36" floating lights....a picture is worth 1000 words. A 6' tank is huge, I mean they do make 72" fixtures, but they are super expensive. If you can fit two 30" - 36" then that would save you money.

Flourscent lights come in lots of sizes and colors.
they have all your standard lengths, 24"/30"/36"/48" etc

They also have different widths, the most common are T5 HO (thin but high output) and your T8 - thicker bulb.

Light also comes in colors measured on the Kelvin scale. You basin hardware store soft white light bulb is 2700K, 3200K has a lot of red in it which will make for vivid colors but poor plant growth. 4100K is cooler blue light bulb, 5500K is morning sun, 6700K is mid-day sun (i find this to be the best bulb), 10,000K is fullspectrum (i find algae growth gets out of hand with 10,000K), and there are a handful of lights above 10,000 which are for salt water aquarium lighting for live rock.

A dual t5 fixture holds two t5 light bulbs, and I find blending the 6700K and the 3200K will maximize color and help plants. In a tank your size, two 36" dual fixtures would be perfect. But its all subjective.